RIGOL Chapter 2 Front Panel Operations
2-52 DG800 User's Guide
To Set Modulation Polarity
Tap the Polarity parameter selection field to select "Positive" or "Negative" polarity
of the modulating waveform to control the output phase.
In the internal modulation, set the polarity to "Positive", and the generator will
output the carrier phase when the modulating waveform amplitude is a logic low
level. It will output the modulating phase when the modulating waveform amplitude
is a logic high level. The situation is the opposite when the polarity is set to
"Negative".
In the external modulation, set the polarity to "Positive", and the generator will
output the carrier phase when the external input signal is a logic low level. It will
output the modulation phase when the external input signal is a logic high level. The
situation is the opposite when the polarity is set to "Negative".
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